EASYD12.dll （PDIUSBD12的上位机动态链接库），包含dll命令接口说明（dll的调用方法），可以供Delphi、VB、易语言、VC....调用-EASYD12.dll (PDIUSBD12 the host computer dynamic link library), contains the dll command interface descr iption (dll call method), can be used for Delphi, VB, easy langu